Hi, I'm looking to study Japanese in Tokyo for around 4-6weeks and was wondering if anyone has any experience and/or recommendations for courses in Tokyo.

I'm looking for courses that are at least 3 days a week and don't want to spend more than $1000 / ¥100,000 preferably closer to ¥70,000 or less.

Does anyone have experience with any of the following?: http://gyoen.co.jp/short-course/ http://www.tijs.jp/english/lesson/ http://www.ksa-ikebukuro.com/course/ http://www.unitas-ej.com/e/guide_overseas_visa2.html http://ujsli.jp/en/course2.html http://shibuya-gaigo.com/sls2/course/one_month.html https://www.evergreen-ls-jp.com/regular-courses/2days-3days-a-week-course/

Thanks for your help.